Some Ideas on Constellation Mapping

1
Some Ideas on Constellation Mapping

• By redefining the co-set labels (L,C and R), and
  assuming there is no THP for the moment, the
  modified mapping has 1.1dB gain comparing with
  the original mapping, and 0.65 dB gain comparing
  with 1D PAM12 (see the following pages).

2
Modified Coset Label Definition
3
Modified 2D 128 Point Constellation
Original mapping with Es 53
Modified mapping with Es 41